IGCSE›Cambridge IGCSE Biology›Mind mapsAdaptive FeaturesCambridge IGCSE Biology: Mind mapStudy pack PDFAlso for this subtopic:Revision notesFlashcardsSubtopic testCover factsWhat is it?Inherited featureHelps organism survive and reproduceSuited to its own environmentXerophytesLive in dry environmentsThick waxy cuticle cuts evaporationSpines: reduced leaf area cuts transpirationSunken stomata trap moist airExtensive roots maximise water uptakeAdaptive featuressuited to surviveHydrophytesLive in water or waterlogged placesLarge air spaces give buoyancyThin cuticle, as water loss is no problemFlexible stems move with currentsHow they ariseResult of natural selectionBetter-suited individuals survive and reproduceFeature becomes more common over generationsExam tipsExplain how a feature helps, not just whatLink each feature to an advantageCactus: spines cut water loss, stem stores water